What’s Trump’s Next Move on Iran?

The aftermath of the 12-day war with Iran looks mixed more than two weeks later. Iran’s nuclear program was badly damaged and likely set back for years. But the Ayatollah’s government isn’t admitting defeat and shows no signs of dropping its revolutionary or nuclear designs. That puts into focus the next policy question for the U.S.: Will Mr. Trump’s cease-fire give way to diplomacy that deepens the achievements of the war, or will it put those achievements at risk?